BIOL 1070 Lecture Notes - Unionidae, Invertebrate, Theodosius Dobzhansky
5 Dec 2012
School
Department
Course
Professor
Document Summary
Variations in adaptation to climate, surroundings (ecology) Shaped by billions of years of evolutionary history of life forms interacting. Interactions between different streams in biology with each other and their environment. Altered by human activity with lasting impacts at large scales that are difficult to predict. Darwin: descent with modification from common ancestors, wrote origin of species . What factors contribute to threats to native freshwater mussel biodiversity in the. Develop the most in the early stages (larval stages: producing veliger larvae (eg. dreissena polymorpha, by releasing fully developed young mussels (rare, by passing early development as a parasitic stage on a host (eg. unionids) Juveniles sit in the mud for months, eating and growing- then become an adult (sexually mature) In the unionids, there is female gonads in females and male gonads in males. Males produce sperm and release it in the water-female pulls in the sperm and has eggs that are ready to be fertilized.
